21813231

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{331}}^1\times {\mathrm{1997}}^1$

素因数の和:2342

約数の個数: 16

約数和(自身を含む): 31840128

約数和(自身を除く): 10026897

約数列:

[1, 3, 11, 33, 331, 993, 1997, 3641, 5991, 10923, 21967, 65901, 661007, 1983021, 7271077, 21813231]

約数ペア:

[(1, 21813231), (3, 7271077), (11, 1983021), (33, 661007), (331, 65901), (993, 21967), (1997, 10923), (3641, 5991)]